lovecoding
/
VIP30


			
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							<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div class="div1">1</div>
  <div class="div1">2</div>
  <script>
    /* ... 扩展运算符 把数组或者类数组 展开成用逗号分割的值 */
    // var a = [1,2,3]
    // var b = [...a]
    // console.log(...a)
    // b[0] = 8
    // console.log(b)     
    // console.log(a)  


    // var a = [1,2,3]
    // var b = [4,5,6]
    // var c = [...a,...b]
    // console.log(c)
    // var d = [...c,7,8]
    // console.log(d)

    // var div1 = document.getElementsByClassName('div1')
    // console.log(div1)

    // var arr1 = [...div1]
    // console.log(arr1)

    // arr1.push(11)
    // console.log(arr1)


    // function fn1(a,b,c){
    //   console.log(a,b,c)
      
    // }
    // let arr = [4,5,6]
    // fn1(...arr) 


    let obj1 = {
      a:1,
      b:2
    }
    let obj2 = {
      b:3,
      c:4
    }
    let obj3 = {...obj2,...obj1}
    console.log(obj3)
  </script>
</body>
</html>